lanceolate

noun
  1. 1

    Any such artefact

adjective
  1. 1

    Having the general shape of a lance; much longer than wide, with the widest part lower than the middle and a pointed apex.

  2. 2

    Of a class of knapped stone points, made without a stem, shoulders, notches, or other features that aid in attachment to a shaft.

Source: https://en.wiktionary.org/wiki/lanceolate